Which species is considered an amplifier host for FMD?

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Multiple Choice

Which species is considered an amplifier host for FMD?

Amplifier host refers to a species that, once infected with FMD, produces large quantities of virus and sheds it in aerosols and secretions, greatly increasing transmission. Pigs are the classic amplifier host for Foot-and-Mouth Disease because the virus replicates to high levels in the pig’s pharyngeal tissue and vesicular fluid, leading to very high viral loads in saliva, mucus, and especially aerosols. This results in rapid and widespread spread, particularly in dense pig populations or when winds carry aerosols to nearby herds. In contrast, cattle, sheep, and goats can be infected and contribute to spread, but they typically shed less virus and are less efficient at amplifying transmission. Therefore, pigs are considered the amplifier host for FMD.

Amplifier host refers to a species that, once infected with FMD, produces large quantities of virus and sheds it in aerosols and secretions, greatly increasing transmission. Pigs are the classic amplifier host for Foot-and-Mouth Disease because the virus replicates to high levels in the pig’s pharyngeal tissue and vesicular fluid, leading to very high viral loads in saliva, mucus, and especially aerosols. This results in rapid and widespread spread, particularly in dense pig populations or when winds carry aerosols to nearby herds. In contrast, cattle, sheep, and goats can be infected and contribute to spread, but they typically shed less virus and are less efficient at amplifying transmission. Therefore, pigs are considered the amplifier host for FMD.

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